Paper compact disc case

ABSTRACT

Disclosed is a paper CD case. The paper CD case comprises a sleeve jacket made of paper and opened at one end thereof; a holder plate made of paper and slidably inserted into the sleeve jacket; and stopper means for limiting a moving distance of the holder plate such that the holder plate is not completely separated from the sleeve jacket. The holder plate has an upper CD holding part on which a CD is rested, a lower support part, and a protective part covering and protecting the CD. First and second projecting beads are formed on the CD holding part to support non-data-written portions of the CD. The stopper means comprises a first hook portion and a second hook portion. The second hook portion is engaged with the first hook portion when the holder plate is pulled out of the sleeve jacket and restrains the holder plate from being completely separated from the sleeve jacket.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a compact disc (hereinafter, referred to as “CD”) case made of paper, and more particularly, the present invention relates to a paper CD case which allows a CD to be easily inserted thereinto and removed therefrom, protects a data-written surface of the CD from being damaged or scratched in the course of inserting and removing the CD, and is capable of being designed to have a variety of colors and shapes, and easily recycled.

[0003] 2. Description of the Related Art

[0004] Generally, a CD case for independently receiving and storing a CD is made of plastic. The plastic CD case has a base which is opened at an upper end thereof, a support frame which is detachably assembled to the base so that the CD can be rested on the support frame, and a cover which is pivotably coupled to one end of the base.

[0005] In the plastic CD case constructed as mentioned above, a hinge part which pivotably connects the base and the cover with each other is likely to be snapped off. Also, if the plastic CD case is inadvertently dropped to a floor, or external impact is applied to the plastic CD case during handling thereof, the plastic CD case is liable to be broken into pieces due to a brittle characteristic of plastic material. Further, while a paper advertising medium which is printed with product information, etc. is put between the base and the support frame, since removal of the paper advertising medium is troublesome, it is difficult to recycle the plastic CD case. Moreover, the plastic CD case is not preferable in terms of environmental protection, due to a non-biodegradable nature of the plastic material. Furthermore, in order to form plastic CD cases having a variety of shapes, because various costly molds are needed in conformity with the shapes, a manufacturing cost is increased. By this fact, since there is no alternative but to form plastic CD cases to have a simple and uniform shape, it is impossible to fully satisfy the diverse tastes of customers. In addition, due to the fact that the plastic CD case is hard and cold to the touch, its feel is unpleasant to a user.

[0006] To cope with these problems of the plastic CD case, paper CD cases have been disclosed in the art.

[0007] Since most of the conventional paper CD cases have a simple and slim pocket-shaped configuration, they are advantageous from the viewpoint of cost and recycling. However, in the conventional paper CD cases, because a CD should be pushed into or pulled out of the paper CD case upon inserting or removing the CD into or from the CD case, a data-written surface of the CD is likely to be scratched or damaged due to friction with the paper CD case, and therefore, it is a frequent occurrence that the CD recorded with costly software is ruined. Also, upon removing the CD from the paper CD case, because a finger is apt to be initially brought into contact with the data-written surface of the CD, it is difficult to adequately protect the data-written surface of the CD. Further, in a state wherein the CD is received in the conventional paper CD case, if the paper CD case is shaken, as the CD is moved in the paper CD case, the data-written surface of the CD and the paper CD case are rubbed against each other, whereby scratches can be formed on the data-written surface of the CD. Moreover, because the conventional paper CD case is formed to have a slim configuration, if impact is externally applied to the paper CD case, or a pressure is applied to the paper CD case while the paper CD case is placed on an uneven surface, since the CD is easily bent or broken, the conventional paper CD case cannot reliably perform its function of protecting the CD.

SUMMARY OF THE INVENTION

[0008] Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a paper CD case which has a structure solid enough to prevent a CD from being broken by externally applied impact, thereby being capable of substituting the conventional CD cases made of plastic.

[0009] Another object of the present invention is to provide a paper CD case which allows a CD to be easily inserted thereinto and removed therefrom.

[0010] Still another object of the present invention is to provide a paper CD case which can be formed to have a variety of colors and shapes.

[0011] Yet still another object of the present invention is to provide a paper CD case which can protect a data-written surface of a CD from being damaged or scratched in the course of inserting and removing the CD.

[0012] In order to achieve the above object, according to the present invention, there is provided a paper CD case comprising: a sleeve jacket made of paper and having an inner space which is opened at one end thereof; a holder plate made of paper for allowing a CD to be rested thereon and slidably inserted into the inner space of the sleeve jacket so that the CD rested on the holder plate is not viewed from the outside; and stopper means for limiting a moving distance of the holder plate in the sleeve jacket to a predetermined distance in a manner such that the holder plate inserted into the sleeve jacket is not completely separated from the sleeve jacket.

[0013] According to the present invention, the sleeve jacket comprises a base part and a cover part integrally connected with each other and respectively folded along a pair of folding guide lines so that they are overlapped one above the other, and a pair of wing portions respectively formed at both side ends of the cover part and folded and attached to the base part in a manner such that openings which are defined between both side ends of the base part and cover part are closed by the pair of wing portions. Consequently, the sleeve jacket has the inner space which is opened at the one end thereof and into which the holder plate can be inserted.

[0014] Also, the holder plate comprises a CD holding part and a support part integrally connected with each other and folded along folding guide lines so that they are overlapped one above the other, and a protective part formed and folded at a free end of the support part for partially covering and thereby protecting the CD rested on the holder plate.

[0015] It is preferred that first and second projecting beads for respectively supporting non-data-written portions of the CD, which are located adjacent to inner and outer edges of the CD, are formed on the CD holding part so that a data-written surface of the CD is not brought into contact with an upper surface of the CD holding part. The first projecting bead can have a ring-shaped configuration or a disc-shaped configuration. In the case that the first projecting bead has the ring-shaped configuration, a hole which is communicated with a center hole of the CD is defined inward of the first projecting bead, and a third projecting bead is formed on the CD holding part around the hole so that the third projecting bead is inserted into the center hole of the CD to prevent the CD from being moved. Further, in the case that the first projecting bead has the disc-shaped configuration, it is preferred that a fourth projecting bead, which is to be inserted into the center hole of the CD, is formed on an upper surface of the first projecting bead.

[0016] Moreover, the stopper means comprises a first hook portion which is formed at a free end of the cover part and folded in such a way as to be positioned in the inner space of the sleeve jacket, and a second hook portion which is formed at a boundary region between the CD holding part and the support part in a manner such that the second hook portion is cut from the boundary region at three sides thereof and folded at one side thereof, the second hook portion being engaged with the first hook portion when the holder plate is pulled out of the sleeve jacket and thereby restraining the holder plate from being completely separated from the sleeve jacket. The stopper means may further comprise third and fourth hook portions which are formed and folded at both side ends of the CD holding part so that they are engaged with the first hook portion along with the second hook portion when the holder plate is pulled out of the sleeve jacket and thereby restrain the holder plate from being completely separated from the sleeve jacket.

[0017] It is preferred that first and second notch portions are formed at free ends of the cover part and base part which free ends define the opened one end of the sleeve jacket in a manner such that the holder plate inserted into the sleeve jacket can be easily grasped by fingers. A tab portion may be formed, by cutting, on the support part of the holder plate at a position where the support part is exposed to the outside through the first notch portion, in a manner such that slippage of fingers upon grasping the holder plate is prevented.

[0018] Furthermore, it is preferred that a pair of third and forth notch portions are formed at both side ends of the CD holding part and the support part in a manner such that it is possible to easily grasp both sides of the CD rested on the holder plate without undergoing any interference.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above objects, and other features and advantages of the present invention will become more apparent after a reading of the following detailed description when taken in conjunction with the drawings, in which:

[0020]FIG. 1 is an exploded perspective view illustrating a paper CD case in accordance with an embodiment of the present invention;

[0021]FIG. 2 is a development view illustrating a sleeve jacket which constitutes the paper CD case according to the present invention;

[0022]FIG. 3 is a development view illustrating a holder plate which constitutes the paper CD case according to the present invention;

[0023]FIGS. 4a through 4 c are views illustrating operations of the paper CD case according to the present invention; and

[0024]FIG. 5 is an exploded perspective view illustrating a variation of the paper CD case according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0025] Reference will now be made in greater detail to a preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.

[0026] As shown in FIG. 1, a paper CD case 10 in accordance with an embodiment of the present invention includes a sleeve jacket 20, and a holder plate 30. The holder plate 30 is formed in a manner such that a CD C is removably loaded thereon. The holder plate 30 is slidably inserted into the sleeve jacket 20.

[0027] The sleeve jacket 20 and the holder plate 30 are made of paper material such as millboard, corrugated paperboard, special paper, and the like, which has a relatively solid structure.

[0028] The sleeve jacket 20 can be formed by folding paper material which is cut to have a predetermined shape as shown in FIGS. 1 and 2. That is to say, the sleeve jacket 20 has a base part 21 and a cover part 22 which are integrally connected with each other and respectively folded along a pair of folding guide lines L1 so that they are overlapped one above the other. A pair of wing portions 21 a are respectively formed at both side ends of the cover part 22 and folded and attached to an inner surface of the base part 21 in a manner such that openings which are defined between both side ends of the base part 21 and cover part 22 are closed by the pair of wing portions 21 a, whereby an inner space, which is opened at one end thereof, is defined in the sleeve jacket 20. Concretely speaking, as the pair of wing portions 21 a are folded also along folding guide lines, a vertical wall portion 23 is formed between each pair of folding guide lines. Therefore, due to the presence of vertical wall portions 23 formed in this way, the inner space, which has a predetermined height and is opened at the one end thereof, is defined in the sleeve jacket 20.

[0029] The holder plate 30 on or from which the CD C can be loaded or unloaded can be slidably inserted into the sleeve jacket 20 through the opened one end. Thus, the sleeve jacket 20 functions to protect the CD C. In this regard, it is to be readily understood that a supplement such as an explanatory note, etc. can be received in the inner space of the sleeve jacket 20.

[0030] The holder plate 30 can be formed by folding paper material which is cut to have a preselected shape as shown in FIGS. 1 and 3. That is to say, the holder plate 30 has a support part 31 and a CD holding part 32 which are integrally connected with each other and respectively folded along a pair of folding guide lines L2 so that they are overlapped one above the other.

[0031] It is preferred that a protective part 33 is formed and folded at a free end of the support part 31 to partially cover and thereby protect the CD C which is rested on the CD holding part 32. As the protective part 33 is folded along a pair of folding guide lines, a vertical wall portion 34, which has the same height as the inner space of the sleeve jacket 20, is formed. Due to the fact that the protective part 33 is supported by the vertical wall portion 34, the protective part 33 ensures that a height of the holder plate 30 inserted into the inner space of the sleeve jacket 20 is appropriately adjusted, and at the same time, prevents the CD C from being exposed to the outside of the paper CD case 10. Because the protective part 33 is exposed to the outside when the holder plate 30 is pulled outward from the sleeve jacket 20, outer surfaces of the protective part 33 and vertical wall portion 34 can be printed with letters or images which explain contents of the CD C.

[0032] The CD holding part 32 has substantially a circular outline and a size for allowing the CD C to be loaded thereon, and functions to protect the CD C in the paper CD case 10.

[0033] In the present invention, it is preferred that first and second projecting beads 41 and 42 for respectively supporting non-data-written portions of the CD C, which are located adjacent to inner and outer edges of the CD C, are formed on an upper surface of the CD holding part 32. Accordingly, since only the non-data-written portions of the CD C are respectively brought into contact with the first and second projecting beads 41 and 42 and a data-written surface of the CD C is not brought into contact with the upper surface of the CD holding part 32, when loading or unloading the CD C on or from the CD holding part 32, it is possible to prevent the data-written surface of the CD C from being inadvertently rubbed against the upper surface of the CD holding part 32. Hence, the data-written surface of the CD C is prevented from being damaged or scratched.

[0034] The first projecting bead 41 can have a ring-shaped configuration or a disc-shaped configuration as shown in FIG. 5.

[0035] In the case that the first projecting bead 41 has the ring-shaped configuration, it is preferred that a hole 39 which is communicated with a center hole C1 of the CD C is defined inward of the first projecting bead 41. A third projecting bead 43 can be further formed on the CD holding part 32 directly around the hole 39 so that the third projecting bead 43 is inserted into the center hole C1 of the CD C to prevent the CD C from being moved. As can be readily seen from FIG. 4b, the hole 39 can be defined in a manner such that it has a diameter which is greater than that of the center hole C1, and in this case, the third projecting bead 43 also supports the non-data-written surface of the CD C. If the hole 39 is defined, when unloading the CD C from the CD holding part 32, because it is possible to insert the index finger into the center hole C1 of the CD C and the hole 39 of the CD holding part 32 and grasp the outer edge of the CD C by the thumb, the data-written surface of the CD C can be stably protected.

[0036] Further, in the case that the first projecting bead 41 has the disc-shaped configuration, it is preferred that a fourth projecting bead 44, which is to be inserted into the center hole C1 of the CD C, is formed on an upper surface of the first projecting bead 41. In this case, since the CD C is prevented from being moved leftward or rightward by the presence of the fourth projecting bead 44, upon handling the paper CD case 10 in which the CD C is received, the CD C can be further stably protected, which is facilitated by the protective part 33.

[0037] Also, according to the present invention, the second projecting bead 42 can be formed to have a shape of a ring which is discontinued at several points. The projecting beads 41, 42, 43 and 44 can be formed by an embossing process.

[0038] On the other hand, one of characterizing features of the paper CD case 10 according to present invention is in that the holder plate 30 inserted into the sleeve jacket 20 is pulled outward from the sleeve jacket 20 only to the extent allowing the CD C to be loaded on or unloaded from the holder plate 30, and stopper means S (see FIG. 4b) is provided to prevent the holder plate 30 from being completely separated from the sleeve jacket 20.

[0039] In other words, describing an example of the stopper means S for preventing complete separation of the holding plate 30 from the sleeve jacket 20, as shown in FIGS. 1, 3 and 4 b, a first hook portion 24 is formed at a free end of the cover part 22 and folded in such a way as to be positioned in the inner space of the sleeve jacket 20. Also, a second hook portion 35 is formed at a boundary region between the support part 31 and the CD holding part 32 of the holder plate 30 in a manner such that the second hook portion 35 is cut from the boundary region at three sides thereof and folded at one side thereof. The second hook portion 35 is engaged with the first hook portion 24 when the holder plate 30 is pulled outward from the sleeve jacket 20, and thereby restrains the holder plate 30 from being completely separated from the sleeve jacket 20.

[0040] In addition, third and fourth hook portions 36 and 37 can be further formed and folded at both side ends of the CD holding part 32 so that they are engaged with the first hook portion 24 along with the second hook portion 35 when the holder plate 30 is pulled outward from the sleeve jacket 20 and thereby restrain the holder plate 30 from being completely separated from the sleeve jacket 20.

[0041] The second hook portion 35, the third hook portion 36 and the fourth hook portion 37 are formed along a circumference of the CD holding part 32 in such a way as to extend toward the inside of the inner space of the sleeve jacket 20, and thereby function to hold, in cooperation with the protective part 33, the CD C in place and prevent the CD C from being moved even when the paper CD case 10 is shaken.

[0042] As the second hook portion 35, the third hook portion 36 and the fourth hook portion 37 are located along a curved path, both side ends of the first hook portion 24 can be curvedly or inclinedly formed, and a free end of the first hook portion 24 can be formed to define a circular arc-shaped outline.

[0043] In the meanwhile, it is preferred that grasping means for enabling the holder plate 30 inserted into the sleeve jacket 20 to be easily grasped is formed in the sleeve jacket 20.

[0044] Namely, as shown in FIGS. 1 and 2, as an example of the grasping means for allowing the holder plate 30 to be easily grasped, first and second notch portions 25 and 25 a can be formed by cutting away portions adjacent to free ends of the base part 21 and the cover part 22 which free ends define the opened one end of the sleeve jacket 20. In this case, because the first hook portion 24 which is formed at the free end of the cover part 22 is folded to be positioned in the sleeve jacket 20, the second notch portion 25 a of the cover part 22 is formed in a manner such that the second notch portion 25 a directly faces the first notch portion 25 of the base part 21 even when the first hook portion 24 is folded with respect to the cover part 22. To this end, a circle or an ellipse is defined by punching at a boundary area between the cover part 22 and the first hook portion 24 in the paper material which is cut as shown in FIG. 2.

[0045] It is preferred that a tab portion 45 (see FIG. 3) is further formed by partially cutting the support part 31 of the holder plate 30 at a position where the support part 31 is exposed to the outside through the first notch portion 25 of the base part 21, in a manner such that the index finger is prevented from being slipped on the holder plate 30 upon grasping and pulling outward the holder plate 30 from the sleeve jacket 20 by inserting the index finger through the first notch portion 25.

[0046] In the preferred embodiment of the present invention, the tab portion 45 is cut in the form of a semicircle or to have a U-shaped outline. When the holder plate 30 is grasped by the index finger to be pulled outward from the sleeve jacket 20, as the tab portion 45 is pressed inward by the index finger, firm grasping of the holder plate 30 is guaranteed. The tab portion 45 also allows the left and right, top and bottom, and front and rear of holder plate 30 to be easily confirmed.

[0047] On the other hand, another grasping means for enabling the CD C to be easily grasped in obedience to a habit of a user can be formed in the holder plate 30.

[0048] As an example of this grasping means which is formed in the holder plate 30, as shown in FIGS. 1 and 3, a pair of third notch portions 38 are formed at both side ends of the CD holding part 32 in a manner such that it is possible to easily grasp both sides of the CD C rested on the CD holding part 32 without undergoing any interference. Also, the support part 31 can be formed with a pair of fourth notch portions 38 a in a manner such that the pair of fourth notch portions 38 a correspond to the pair of third notch portions 38, respectively. These third and fourth notch portions 38 and 38 a ensure that the outer edge of the CD C can be easily grasped using the thumb and middle finger to load or unload the CD C on or from the CD holding part 32, whereby the data-written surface of the CD C is prevented from being damaged.

[0049] According to the present invention, it is preferable to print or coat portions of the sleeve jacket 20 and the holder plate 30 which portions are exposed to the outside. Also, in order to protect the data-written surface of the CD C, it is preferable to coat a portion of the CD holding part 32 which portion is exposed to the outside.

[0050] Describing a manufacturing procedure of the paper CD case according to the present invention, constructed as mentioned above, as can be readily seen from FIGS. 2 and 3, after cutting paperboard material in the form of the deployed sleeve jacket 20 and the deployed holder plate 30, by folding the cut paperboard material, the sleeve jacket 20 and the holder plate 30 of the paper CD case 10 can be independently prepared as shown in FIG. 1.

[0051] Then, after the CD C is loaded on the CD holding part 32 of the holder plate 30, the holder plate 30 is inserted into the sleeve jacket 20 as shown in FIG. 4a.

[0052] Upon pulling outward the holder plate 30 from the sleeve jacket 20 to unload the CD C from the paper CD case 10 or to receive the CD C into the paper CD case 10, the holder plate 30 is grasped by inserting the fingers into the first and second notch portions 25 and 25 a of the sleeve jacket 20. At this time, as the tab portion 45 of the holder plate 30 is pressed inward by the finger which is inserted into the first notch portion 25, the holder plate 30 is firmly grasped by the fingers. By this fact, upon pulling outward the holder plate 30 from the sleeve jacket 20, slippage of the fingers on the holder plate 30 is prevented, whereby it is possible to conveniently pull outward the holder plate 30.

[0053] By pulling outward the holder plate 30 in this way, the holder plate 30 is slid out of the sleeve jacket 20. At this time, as shown in FIGS. 4b and 4 c, when the holder plate 30 is pulled from the sleeve jacket 20 by a predetermined distance, the second hook portion 35 is engaged with the first hook portion 24, and the third and fourth hook portions 36 and 37 are engaged with the first hook portion 24. Accordingly, since the holder plate 30 cannot be further pulled out of the sleeve jacket 20, the holder plate 30 is not completely separated from the sleeve jacket 20.

[0054] When pulling of the holder plate 30 is stopped, the CD C can be loaded on or unloaded from the holder plate 30. That is to say, by unfolding the protective part 33 of the holder plate 30, the CD C can be loaded on or unloaded from the CD holding part 32.

[0055] In the case that the CD holding part 32 is defined with the hole 39, depending upon a habit of a user, one finger can be inserted into the hole 39 and another finger can grasp a portion of the outer edge of the CD C which portion is positioned in the third and fourth notch portions 38 and 38 a, to unload the CD C from the CD holding part 32. This applies in the same manner upon loading the CD C on the CD holding part 32. In the present invention, during handling of the CD C, since the data-written surface of the CD C is not rubbed against the upper surface of the CD holding part 32 owing to the presence of the first and second projecting beads 41 and 42, the data-written surface of the CD C is prevented from being scratched or damaged.

[0056] Meanwhile, upon storing the CD C, after loading the CD C on the CD holding part 32 of the holder plate 30, by pushing the holder plate 30 into the sleeve jacket 20, the holder plate 30 is inserted into the sleeve jacket 20 in a state wherein the hook portions 35, 36 and 37 of the holder plate 30 are engaged with the first hook portion 24 of the sleeve jacket 20 and the support part 31 of the holder plate 30 is supported by the base part 21 of the sleeve jacket 20. Then, as the hook portions 35, 36 and 37 of the holder plate 30 are disengaged from the first hook portion 24, the hook portions 35, 36 and 37 are moved in a state wherein they are brought into contact with a lower surface of the cover part 22 of the sleeve jacket 20 (see FIG. 4a). Thus, by the presence of the hook portions 35, 36 and 37 and the protective part 33, the holder plate 30 can be smoothly pulled out of and pushed into the sleeve jacket 20. As a consequence, while the CD C is stored in this way, even though the paper CD case 10 is shaken, the CD C is not moved in the paper CD case 10, which is further facilitated by the application of the fourth projecting bead 44.

[0057] As apparent from the above descriptions, the paper CD case according to the present invention, constructed as mentioned above, provides advantages in that, since the CD case is made of paper, it is possible to form, at a reduced cost, CD cases to have a variety of colors and shapes, in obedience to the diverse tastes of customers. Also, by performing a coating treatment for the paper CD case according to the present invention, the paper CD case can be made pleasant to the touch, and valuableness of the paper CD case can be increased. Also, since recycling of the paper CD case is possible, the paper CD case is superior to the conventional plastic CD case in terms of environmental protection.

[0058] Further, because the paper CD case has a solid structure for substituting the conventional plastic CD case, even when the paper CD case is inadvertently dropped to a floor, or a load is externally applied to the paper CD case placed on an uneven surface, the paper CD case is hardly deformed and is prevented from being damaged or broken into pieces, other than the conventional plastic CD case. Therefore, the paper CD case according to the present invention can reliably perform its function of protecting a CD.

[0059] Moreover, in the present invention, because a data-written surface of the CD is protected, by virtue of first and second projecting beads, from being scratched or damaged during handling of the CD, and the CD is prevented, by virtue of a protective part, hook portions and a fourth projecting bead, from being moved in the paper CD case even when the paper CD case is shaken, CD protection is improved.

[0060] Furthermore, by the fact that a holder plate is not completely separated from a sleeve jacket and instead partially drawn to a predetermined position, when considering the conventional situation where a holder plate is completely separated from a sleeve jacket upon removing a CD, it is convenient to use and handle the paper CD case according to the present invention, and the CD can be easily inserted into and removed from the paper CD case.

[0061] In addition, in the case that paper CD cases according to the present invention are stored in a state wherein they are vertically received in a CD rack or horizontally arranged in a CD box, it is not necessary to completely remove each paper CD case as a whole from the CD rack or box, and instead, it is sufficient to partially pull the holder plate out of the sleeve jacket to unload the CD from the paper CD case, whereby user convenience is ensured.

[0062] In the drawings and specification, there have been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims. 

What is claimed is:
 1. A paper CD case comprising: a sleeve jacket made of paper and having an inner space which is opened at one end thereof; a holder plate made of paper for allowing a CD to be rested thereon and slidably inserted into the inner space of the sleeve jacket so that the CD rested on the holder plate is not viewed from the outside; and stopper means for limiting a moving distance of the holder plate in the sleeve jacket to a predetermined distance in a manner such that the holder plate inserted into the sleeve jacket is not completely separated from the sleeve jacket.
 2. The paper CD case as claimed in claim 1, wherein the sleeve jacket comprises a base part and a cover part integrally connected with each other by a vertical wall portion and folded at upper and lower ends of the vertical wall portion so that they are overlapped one above the other, and a pair of wing portions respectively formed at both side ends of the cover part and folded and attached to the base part in a manner such that openings which are defined between both side ends of the base part and cover part are closed by the pair of wing portions; and the holder plate comprises a CD holding part and a support part integrally connected with each other and folded along folding guide lines so that they are overlapped one above the other, and a protective part formed and folded at a free end of the support part for partially covering and thereby protecting the CD rested on the holder plate.
 3. The paper CD case as claimed in claim 2, wherein first and second projecting beads for respectively supporting non-data-written portions of the CD, which are located adjacent to inner and outer edges of the CD, are formed on the CD holding part so that a data-written surface of the CD is not brought into contact with an upper surface of the CD holding part.
 4. The paper CD case as claimed in claim 3, wherein the first projecting bead has a ring-shaped configuration, and a hole which is communicated with a center hole of the CD is defined inward of the first projecting bead.
 5. The paper CD case as claimed in claim 3, wherein the first projecting bead has a disc-shaped configuration, and a third projecting bead, which is to be inserted into the center hole of the CD, is formed on an upper surface of the first projecting bead.
 6. The paper CD case as claimed in claim 2, wherein the stopper means comprises a first hook portion which is formed at a free end of the cover part and folded in such a way as to be positioned in the inner space of the sleeve jacket, and a second hook portion which is formed at a boundary region between the CD holding part and the support part in a manner such that the second hook portion is cut from the boundary region at three sides thereof and folded at one side thereof, the second hook portion being engaged with the first hook portion when the holder plate is pulled out of the sleeve jacket and thereby restraining the holder plate from being completely separated from the sleeve jacket.
 7. The paper CD case as claimed in claim 6, wherein the stopper means further comprises third and fourth hook portions which are formed and folded at both side ends of the CD holding part so that they are engaged with the first hook portion along with the second hook portion when the holder plate is pulled out of the sleeve jacket and thereby restrain the holder plate from being completely separated from the sleeve jacket.
 8. The paper CD case as claimed in claim 2, wherein first and second notch portions are formed at free ends of the cover part and base part which free ends define the opened one end of the sleeve jacket in a manner such that the holder plate inserted into the sleeve jacket can be easily grasped by fingers.
 9. The paper CD case as claimed in claim 8, wherein a tab portion is formed, by cutting, on the support part of the holder plate at a position where the support part is exposed to the outside through the first notch portion, in a manner such that slippage of fingers upon grasping the holder plate is prevented.
 10. The paper CD case as claimed in claim 2, wherein third and fourth notch portions are formed at both side ends of the CD holding part and the support part in a manner such that it is possible to easily grasp both sides of the CD rested on the holder plate without undergoing any interference. 